標題: Synthesis of Ferroelectric Liquid Crystalline Polyoxiranes and Polyoxetanes By Ring Opening Polymerization.
作者: Hsu, Chain-Shu
Liau, Wei-Lung
應用化學系
Department of Applied Chemistry
關鍵字: ferroelectric liquid crystalline polymers;polyoxirane;polyoxetane
公開日期: 1998
摘要: The synthesis of two series of liquid crystalline polyoxiranes and polyoxetanes containing 4-(4-hydroxybiphenyl-4'-carbonyloxy)- phenyl (2S, 3S)-2-chloro-3-methylvalerate side groups is presented. Differential scanning calorimetry, polarizing optical microscopy and X-ray diffraction measurements reveal liquid crystalline phases for all obtained polymers. A majority of the prepared polyoxiranes present cholesteric, smectic A, chiral smectic C and an undefined smectic phases. Most of the prepared polyoxetanes reveal only a chiral smectic C phase. Effect of polymer backbone and spacer length on the mesomorphic properties of the obtained polymers is discussed. Although the polyoxirane and polyoxetane backbone are more flexible than the polymethacrylate backbone, side-chain crystalization does not occur in any of the synthesized polymers.
URI: http://hdl.handle.net/11536/109
http://dx.doi.org/10.1080/10587259808045372
ISSN: 1058-725X
DOI: 10.1080/10587259808045372
期刊: MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS
Volume: 318
起始頁: 1
結束頁: 17
顯示於類別:期刊論文


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  1. 000207083100002.pdf